Following code is some date and time format in C#.net
using System;
using System.Collections.Generic;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
DateTime dateTime = DateTime.Now;
Console.WriteLine(dateTime.ToString("dddd dd yyyy"));
Console.WriteLine(dateTime.ToString("ddd dd yyyy"));
Console.WriteLine(dateTime.ToString("HH:mm:ss"));
Console.WriteLine(dateTime.ToString("hh:mm"));
Console.WriteLine(dateTime.ToString("mm/dd/yyyy HH:mm"));
Console.WriteLine(dateTime.ToString("dd/yyyy"));
Console.WriteLine(dateTime.Year);
Console.WriteLine(dateTime.Date);
Console.WriteLine(dateTime.DayOfWeek);
Console.WriteLine(dateTime.DayOfYear);
Console.WriteLine(dateTime.Day);
Console.ReadLine();
}
}
}